Many non- invasive methods are now used to characterize the cosmetic products properties and their interactions with skin and hair. Physico-chemical studies, biological and clinical effects measurements, the development of new instrumental techniques ... are crucial for the cosmetic sector.COMET (Cosmetic Measurement & Testing) is the 1st scientific congress dedicated to cosmetics testing & measurement.COMET is the place where academic researchers, the major firms, SMEs and start-ups share knowledge and participate in scientific discussion.